| ASA STANDARD CHAIN NUMBER | 40 |
| BORE DIAMETER | 0.688 INCHES NOMINAL |
| BORE LENGTH | 1.125 INCHES NOMINAL |
| BORE TYPE | STRAIGHT |
| DESIGN FORM | PLAIN |
| DISTANCE FROM CENTER OF BORE TO BOTTOM OF KEYWAY | 0.439 INCHES NOMINAL |
| DISTANCE FROM HUB END TO FLANGE END | 0.860 INCHES NOMINAL BOTH ENDS |
| FURNISHED ITEMS | KEYING FACILITY |
| FACE WIDTH | 0.265 INCHES NOMINAL |
| HARDNESS RATING TEST METHOD | ROCKWELL |
| HOLE LOCATION | ONE LOCATED ON HUB ON TOP OF KEYWAY,0.500 IN.FROM END OF HUB TO CENTERLINE OF HOLE |
| HUB OUTSIDE DIAMETER | 1.969 INCHES NOMINAL BOTH ENDS |
| KEY WIDTH | 0.188 INCHES NOMINAL |
| KEYING FACILITY TYPE | KEYWAY |
| KEYWAY WIDTH | 0.188 INCHES NOMINAL |
| OUTSIDE DIAMETER | 2.688 INCHES NOMINAL |
| OVERALL LENGTH | 1.125 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE 1141 ASSN STD 1ST MATERIAL RESPONSE AND AISI 1141 ASSN STD 2ND MATERIAL RESPONSE |
| MATERIAL | STEEL COMP 1141 |
| METALLIC HARDNESS RATING AND LOCATION | 45.0 ROCKWELL C MINIMUM BODY AND 50.0 ROCKWELL C MAXIMUM BODY |
| PITCH DIAMETER | 2.563 INCHES NOMINAL |
| QUANTITY | 1 |
| SECURING HOLE QUANTITY | 1 |
| SECURING METHOD | THREADED HOLE |
| STYLE DESIGNATOR | PLAIN |
| TEETH ROW QUANTITY | 1 |
| TEETH HARDNESS RATING | 45.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM |
| TEETH QUANTITY PER ROW | 16 |
| THREAD SIZE | 1/4 IN.-20 THD SIZE |
| TOOTH PITCH | 0.500 INCHES NOMINAL |